<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>商品管理</el-breadcrumb-item>
    <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card>
       <el-alert title="添加商品信息" center show-icon :closable="false" type="info">
      </el-alert>

      <!-- 步骤条 -->
      <el-steps :space="200" :active="stepActiveIndex - 0" align-center finish-status="success">
      <el-step title="基本信息"></el-step>
      <el-step title="商品参数"></el-step>
      <el-step title="商品属性"></el-step>
      <el-step title="商品图片"></el-step>
      <el-step title="商品内容"></el-step>
      <el-step title="完成"></el-step>
    </el-steps>

    <!-- Form -->
    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef"
    label-position="top" label-width="100px">
      <!-- tab标签 -->
      <el-tabs :tab-position="'left'" v-model="stepActiveIndex" :before-leave="beforeTabLeave"
      @tab-click="tabsClick" >
        <el-tab-pane label="基本信息" name="0">
          <el-form-item label="商品名称" prop="goods_name">
            <el-input v-model="addForm.goods_name"></el-input>
          </el-form-item>
          <el-form-item label="商品价格" prop="goods_price">
            <el-input type="number" v-model="addForm.goods_price"></el-input>
          </el-form-item>

          <el-form-item  label="商品重量" prop="goods_weight">
            <el-input type="number" v-model="addForm.goods_weight"></el-input>
          </el-form-item>
          <el-form-item  label="商品数量" prop="goods_number">
            <el-input type="number"  v-model="addForm.goods_number"></el-input>
          </el-form-item>
          <el-form-item label="商品分类" prop="goods_cat" >
            <el-cascader
              v-model="addForm.goods_cat"
              :options="cateList"
              :props="cascaderProps" clearable
              @change="cateChange" style="width:100%">
            </el-cascader>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品参数" name="1">
          <!-- 渲染表单的item项 -->
          <el-form-item :label="item.attr_name" v-for="item in manyTableData"
           :key="item.attr_id">
           <!-- 复选框组 -->
            <template>
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb" v-for="(cb, i) in item.attr_vals"
                :key="i" border></el-checkbox>
              </el-checkbox-group>
            </template>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品属性" name="2">
          <el-form-item :label="item.attr_name" v-for="item in onlyTableData"
          :key="item.attr_id">
            <el-input v-model="item.attr_vals"></el-input>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品图片" name="3">
          <el-upload :action="uploadUrl" :on-preview="handlePreview"
          :on-remove="handleRemove" list-type="picture" :headers="headerObj"
          :on-success="handleOnSucess">
            <el-button size="small" type="primary">点击上传</el-button>
            <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
          </el-upload>
        </el-tab-pane>
        <el-tab-pane label="商品内容" name="4">
          <!-- 富文本编辑器 -->
           <quill-editor
            ref="myQuillEditor"
            v-model="addForm.goods_introduce" >
           </quill-editor>
           <!-- 添加商品按钮 -->
           <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
        </el-tab-pane>
      </el-tabs>
    </el-form>

    </el-card>

    <!-- 图片预览 -->
    <el-dialog
      title="图片预览"
      :visible.sync="perviewVisible"
      width="50%">
      <img :src="previewPath" alt="" class="perviewImg">
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data () {
    return {
      stepActiveIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        // 商品图片列表
        pics: [],
        // 商品描述
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      cateList: [],
      // 指定级联选择器的配置对象
      cascaderProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
        expandTrigger: 'hover',
        checkStrictly: false
      },
      // 动态参数列表数据
      manyTableData: [],
      // 静态属性列表数据
      onlyTableData: [],
      // 上传图片的url
      uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
      // uploadUrl: this.$http.defaults.baseURL + '/upload',
      // 图片上传组件的headers
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      // 预览的图片地址
      previewPath: '',
      perviewVisible: false
    }
  },
  created () {
    this.getCateList()
  },
  methods: {
    // 获取商品分类数据
    async getCateList () {
      const { data: res } = await this.$http.get('categories', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类失败!')
      }
      this.cateList = res.data
    },
    // 商品分类值改变事件
    async cateChange () {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
      // 获取静态参数
      const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`,
        { params: { sel: 'many' } })
      if (res.meta.status !== 200) {
        return this.$message.error('获取静态属性列表失败')
      }
      res.data.forEach(item => {
        item.attr_vals =
        item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
      })

      this.manyTableData = res.data
      // 获取动态属性
      const { data: res1 } = await this.$http.get(`categories/${this.cateId}/attributes`,
        { params: { sel: 'only' } })
      if (res1.meta.status !== 200) {
        return this.$message.error('获取动态属性列表失败')
      }

      this.onlyTableData = res1.data
    },
    // 标签切换事件
    beforeTabLeave (activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类！')
        return false
      }
    },
    async tabsClick () {
      if (this.stepActiveIndex === '1') {
        // 获取静态参数
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`,
          { params: { sel: 'many' } })
        if (res.meta.status !== 200) {
          return this.$message.error('获取静态属性列表失败')
        }
        res.data.forEach(item => {
          item.attr_vals =
          item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })

        this.manyTableData = res.data
      } else if (this.stepActiveIndex === '2') {
        // 获取动态属性
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`,
          { params: { sel: 'only' } })
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态属性列表失败')
        }

        this.onlyTableData = res.data
      }
    },
    // 处理图片预览
    handlePreview (file) {
      debugger
      this.previewPath = file.response.data.url
      this.perviewVisible = true
    },
    // 处理移除图片的操作
    handleRemove (file, fileList) {
      const tempPath = { pic: file.response.data.tmp_path }
      const i = this.addForm.pics.findIndex(x => x.pic === tempPath)
      this.addForm.pics.splice(i, 1)
    },
    // 监听图片上传成功事件
    handleOnSucess (response, file, fileList) {
      const picInfo = { pic: response.data.tmp_path }
      this.addForm.pics.push(picInfo)
    },
    // 添加商品
    add () {
      debugger
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return this.$message.error('请填写表单必填项！')
        // 执行添加商品
        // loadsh cloneDeep(boj) 深拷贝
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        // 处理动态参数
        this.manyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_vals: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        // 处理静态属性
        this.onlyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_vals: item.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        // 发起请求
        const { data: res } = await this.$http.post('goods', form)
        console.log(res)
        if (res.meta.status !== 201) {
          return this.$message.error('添加商品失败!')
        }
        this.$message.success('添加商品成功!')
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId () {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 5px 0 0;
}
.perviewImg {
  width: 100%;
}
.btnAdd {
  margin-top: 15px;
}
</style>
